Despite taking most of 2005 off, pop star Britney Spears has, for the third time in four years, topped Yahoo's annual list of the most-searched for names on the Internet.

Although the 24-year-old released an album of remixes, B In The Mix: The Remixes, in November, it was the birth of her son Sean Preston Federline on September 14 that helped her gain the interest of millions.

The Toxic singer, who lost out to the TV contest American Idol in 2004, has beaten superstar rapper 50 Cent, who came in second on the list. Third place was taken up, strangely, by Cartoon Network, while Mariah Carey and Green Day bagged fourth and fifth positions respectively.